USS Calypso (SP-632)

USS Calypso (SP-632) tied up in an icy harbor sometime between 1917 and 1919.
History
United States
Name	Calypso
Namesake	Calypso, in Greek mythology, a nymph who lived on the island of Ogygia, where, according to the Odyssey, she detained Odysseus for seven years
Owner	A. L. Mason, Westfield, New Jersey (1917)
Builder	New York Yacht, Launch & Engine Company, Morris Heights, Bronx, New York
Completed	1909
Fate	Sold to U.S. Navy June 1917
United States Navy
Name	USS Calypso
Namesake	Previous name retained
Acquired	June 1917
Commissioned	July 1917
Fate	Transferred to U.S. Bureau of Fisheries 9 September 1919
U.S. Bureau of Fisheries
Name	USFS Merganser
Namesake	Merganser, a fish-eating duck of the genus Mergus in the subfamily Anatinae
Acquired	9 September 1919
Identification	WTFD[1]
Fate	Transferred to Fish and Wildlife Service 30 June 1940
U.S. Fish and Wildlife Service
Name	US FWS Merganser
Namesake	Previous name retained
Acquired	30 June 1940
Decommissioned	1942 or 1943
General characteristics (as private motorboat)
Type	Motorboat
Length	45 ft (13.7 m)
Propulsion	20 hp (15 kW) Alco gasoline engine
General characteristics (as U.S. Navy patrol boat)
Type	Patrol vessel
Length	54 ft (16.5 m)
Propulsion	20 hp (15 kW) Alco gasoline engine
General characteristics (as BOF patrol boat)
Type	Fishery patrol vessel
Tonnage	16 GRT 13 NRT
Length	54 ft (16.5 m)
Beam	10 ft 6 in (3.2 m)
Draft	3 ft 8 in (1.1 m)
Propulsion	1919: 20 hp (15 kW) Alco gasoline engine, 100 US gallons (380 L; 83 imp gal) fuel 1922: 16 hp (12 kW) engine
Speed	9 mph (14 km/h)

The second USS Calypso (SP-632) was a United States Navy patrol vessel in commission from 1917 to 1919. She originally operated as the private motorboat Calypso from 1909 to 1917. After the conclusion of her U.S. Navy career, she served as the fishery patrol vessel in the United States Bureau of Fisheries fleet from 1919 to 1940 as USFS Merganser and in the Fish and Wildlife Service fleet as US FWS Merganser from 1940 to 1942.